Ventilation grille



FIG. 1 is a perspective view of the ventilation grille.

FIG. 2 is bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof.

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof.

The present application is directed to the shape and contour of the design illustrated in the drawings. 

We claim the ornamental design for a ventilation grille, as shown and described. 